A.to retain
B.to remain
C.to maintenance
D.to have
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A.good lubrication
B.low thermal stress
C.good mechanical properties
D.acid corrosion
A.for starting diesel engines
B.in pneumatic control system
C.in pneumatic tools
D.All the above are true
A.the air receivers
B.the starting valves
C.the cylinder covers
D.the distributors
A.machine efficiency
B.machinery efficiency
C.mechanical efficiency
D.mechanics efficiency
A.to need
B.ready for
C.want to
D.going to be
最新試題
Electrically operated safety devices on auxiliary diesel engines function to stop the engine by （）.
Lube oil cannot be efficiently filtered if its （）.
A thrust bearing is used with a propulsion diesel engine to （）.
In using reduction gears to obtain efficient propeller speeds, （）.
If a diesel engine is difficult to start and operates with the engine temperatures lower than normal, you should suspect that the （）.
Proper filtering and straining of fuel oil is important because the （）.
The minimum speed an engine must attain before ignition can occur depends upon （）.
If the main engine of an unattended engine room shuts down automatically, it will be indicated by an alarm （）.
A diesel engine is operating with excessively high exhaust temperatures at all cylindersTo correct this condition, you should FIRST （）.
Control of the main propulsion diesel engines can be shifted from the engine room to the wheelhouse from the （）.